The present invention in the cap opening and closing operation to the inlet of the various packaging containers, in more detail, the opening and closing operation sound is generated during the opening and closing operation of the cap to induce interest according to the opening and closing operation of the cap, and also opening and closing operation The present invention relates to a sound cap for a packaging container in which a state can be directly felt. To this end, the present invention, the inner cap 110 is spirally coupled to the inlet 12 of the packaging container 10; An outer cap 120 rotatably coupled to the outside of the inner cap; An opening and closing operation sound generator 130 formed of the inner cap and the outer cap to generate an opening and closing operation sound when the outer cap 120 is rotated; It is formed of the inner cap and the outer cap, the opening and closing operation unit 140 to open and close the operation from the inlet 12 of the packaging container 10, the inner cap is caught in the outer cap in a predetermined rotation period when the rotation operation of the outer cap 120; Characterized in that configured to include.
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